--01
Select table_name from user_tables;
--02
create table t_user
(
 id int,
 username varchar2(30),
 salary number(9,2),
 birth date,
 sex char(1),
 headImg long raw
);
--03 sequence
create sequence user_id_seq 
increment by 10
start with 1
--04 search
select * from t_user
--05 add
insert into t_user
(id,username,salary,birth,sex,headImg)
values
(user_id_seq.nextval,?,?,?,?,?);
--06 select
select id,username,salary,birth,sex,headImg
from t_user
where id=?
